SoundStream.hpp

00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
00005 //
00006 // This software is provided 'as-is', without any express or implied warranty.
00007 // In no event will the authors be held liable for any damages arising from the use of this software.
00008 //
00009 // Permission is granted to anyone to use this software for any purpose,
00010 // including commercial applications, and to alter it and redistribute it freely,
00011 // subject to the following restrictions:
00012 //
00013 // 1. The origin of this software must not be misrepresented;
00014 //    you must not claim that you wrote the original software.
00015 //    If you use this software in a product, an acknowledgment
00016 //    in the product documentation would be appreciated but is not required.
00017 //
00018 // 2. Altered source versions must be plainly marked as such,
00019 //    and must not be misrepresented as being the original software.
00020 //
00021 // 3. This notice may not be removed or altered from any source distribution.
00022 //
00024 
00025 #ifndef SFML_SOUNDSTREAM_HPP
00026 #define SFML_SOUNDSTREAM_HPP
00027 
00029 // Headers
00031 #include <SFML/Audio/Sound.hpp>
00032 #include <SFML/System/Thread.hpp>
00033 #include <cstdlib>
00034 
00035 
00036 namespace sf
00037 {
00044 class SFML_API SoundStream : private Thread, private Sound
00045 {
00046 public :
00047 
00048     using Sound::Status;
00049     using Sound::Stopped;
00050     using Sound::Paused;
00051     using Sound::Playing;
00052     using Sound::Pause;
00053     using Sound::SetPitch;
00054     using Sound::SetVolume;
00055     using Sound::SetPosition;
00056     using Sound::GetPitch;
00057     using Sound::GetVolume;
00058     using Sound::GetPosition;
00059 
00063     struct Chunk
00064     {
00065         const Int16* Samples;   
00066         std::size_t  NbSamples; 
00067     };
00068 
00073     virtual ~SoundStream();
00074 
00079     void Play();
00080 
00085     void Stop();
00086 
00093     unsigned int GetChannelsCount() const;
00094 
00101     unsigned int GetSampleRate() const;
00102 
00109     Status GetStatus() const;
00110 
00111 protected :
00112 
00117     SoundStream();
00118 
00126     void Initialize(unsigned int ChannelsCount, unsigned int SampleRate);
00127 
00128 private :
00129 
00134     virtual void Run();
00135 
00142     virtual bool OnStart();
00143 
00152     virtual bool OnGetData(Chunk& Data) = 0;
00153 
00158     void CleanUp();
00159 
00160     enum {BuffersCount = 2};
00161 
00163     // Member data
00165     bool          myIsStreaming;           
00166     unsigned int  myBuffers[BuffersCount]; 
00167     unsigned int  myChannelsCount;         
00168     unsigned int  mySampleRate;            
00169     unsigned long myFormat;                
00170 };
00171 
00172 } // namespace sf
00173 
00174 
00175 #endif // SFML_SOUNDSTREAM_HPP